Add UDP to do a simple water body mapping - #633
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Adds an algorithm that detects surface water in lakes, reservoirs, and other water bodies from Sentinel-2 L2A imagery as an openEO UDP.
The openEO process is adapted from the Simple Water Bodies' Mapping (SWBM) evalscript, originally developed by Mohor Gartner. Water pixels are rendered solid blue; non-water pixels are rendered as 2× true colour.
The openEO process is running on Copernicus Data Space over the spatial extent of Lake of Sainte-Croix, France on 2022-08-01 to 2022-08-31.